Spring-lock attachment for bill-files, &amp;c.



m. 721,349. I PATENTED FEB. 24, 1903.

. R. B. wxnson.

. SPRING LOCK ATTACHMENT FOR BILL FILES, 6w.

v LPPLIOATIOH FILED MY. 1, 190'2. 1.0 MODEL.

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UNITED STATES PATENT OFFICE.

RALPH B. WILSON, CHICAGO, ILLINOIS.

SPRING-LOCK ATTACHMENT FOR BILL-FILES, 80G.

SPECIFICATION forming part of Letters Patent No. 721,349, dated February 24, 1903.

Application filed November 7, 1902. Serial No. 130,457. (No model.)

T at whom, it may concern:

Be it known that I, RALPH B. WILSON, a citizen of the United states residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Spring-Lock Attachments for Bill-Files, &c.; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in attachments for bill-files for details of construction and combinations of parts,which will be hereinafter fully described. and then specifically defined in the appended claim.

The invention isclearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, and in which drawings Figure l is a side elevation of my improved attachment for bill-tiles. Fig. 2 is a longitudinal sectional view on line 2 2 of Fig. 1, and Fig. 3 is a transverse section on line 3 3 of Fig. 1.

Reference now. being had to the detailsof the drawings by letter, A in the several fig-. ures of the drawings designates the follower of the file, adapted to rest upon the leaves of paper, which are previously apertured to fit over the metallic posts B, there being two of these shown in the drawings, which are supported upon the base 0 and have threaded connection therewith. Said follower is apertured, as at D, Fig. 3, to receive the posts B. Intermediate the base portion and the follower are a series of leaves, (designated by letter E.)

Mounted upon the outer face of the follower are the spring-bars F, there being two of these bars shown in the drawings, each of which is mounted upon a plate H, fastened, by means of screws I, to the follower. It will be observed that each of these spring-bars is only secured at one end by means of a bolt K,while its other end is recessed, as at F, said recessed portion being preferably concaved and adapted to conform to the'circumference of the posts B and to bite into or frictionally engage the same when in a substantially horizontal position. Pivotally mounted on the plate H between lugs H (shown in Fig. 3 of the drawings) is a lever M, having a handle M integral therewith, and intermediate said projections H is a widened portion R of said lever, the edges of which are slightly tapering, and at the extreme end of said widened portion is a lug m, which is adapted to enter an elongated recess f in the spring-bar, as shown in Figs. 1 and 3 of the drawings.

From the foregoing it will be seen that when it is desired to lock the follower to the posts passing through the leaves and the aperture in the follower said spring-bars are pushed down, so that the recessed ends thereof will securely bite into or frictionally engage the circumference of the posts sufficiently to hold the follower tightly against the pile of leaves, in which position the handle of the operating-lever will extend out in the position illustrated in dotted lines in Fig. 2 or substantially at right angles to the face of the follower, When it is desired to throw the spring away from or out of engagement with the posts, the operator pushes the handle end of the'lever against the follower, andthe oppositeend of thelever will contact with, the under surface of the spring-bar and raise the sameout of its locking position.

While I have shown a particular detailed.

In combination with a bill file having a into a slotted portion of the spring-bar, as the follower, posts passing therethrough, a. plate lever is swung so that its angle end will dissecured to the follower, lugs on said plate, engage the bar from said posts, as set forth. a slotted spring-bar fastened at one end to In testimony whereof I hereunto affix my 5 sadid plate, fand its other end recessed and signature in presence of two Witnesses.

a apted to rictionally engage said posts, an angle-lever pivotally mounted between the RALPH WILSON lugs on said plate and between the bar and Witnesses: plate, a widened portion of said lever having J AMES ROTT, :0 an integral lug at its end designed to spring ROBERT W. STEWART. 

